Sierra Iris
Iris hartwegii
Last reviewed: July 2026
Sierra Iris is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-05-21). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.
Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.
Light
full sun
Water
low
Size
6"–24" H × 6"–18" W
Bloom
Apr, May, Jun
Native to
CA
Pollinators
bees, butterflies
Browse plants for this ecoregion
Sierra iris is a delicate perennial native to mountainous regions. It produces lovely purple to blue flowers atop slender stems in spring to early summer. This drought-tolerant iris has narrow, blade-like leaves and creates small clumps that gradually spread.
In an HOA neighborhood
Sierra Iris is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Foliage may look untidy after blooming
- Best planted in groups for visual impact
Wildlife value
Sierra iris attracts and supports native bees and butterflies during its spring bloom period. It provides valuable nectar resources early in the season when other food sources may be limited.
Common questions
- How much sun does Sierra Iris need?
- Sierra Iris grows best in full sun conditions.
- When does Sierra Iris bloom?
- Sierra Iris blooms in April, May, and June.
- Where is Sierra Iris native?
- Sierra Iris (Iris hartwegii) is native to CA, per the USDA PLANTS Database and regional native plant society lists.
- Is Sierra Iris toxic to dogs?
- Yes. Sierra Iris is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Sierra Iris toxic to cats?
- Yes. Sierra Iris is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- What pollinators does Sierra Iris attract?
- Sierra Iris draws bees and butterflies.
- Is Sierra Iris HOA-friendly?
- Sierra Iris is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Pollinator Patch flags toxic plants like Sierra Iris and shows pet-safe natives for your ecoregion instead.
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